|Year|Single|Chart positions USA Billboard Hot Dance Club Play|Chart positions Polish Charts|Album|
|---|---|---|---|---|
|2008|"Fall"|—|2|Natalia Lesz|
|2008|"Power of Attraction"|24|5|Natalia Lesz|
|2008|"Miss You"|—|—|Natalia Lesz|
|2009|"Coś za coś"|—|1|That Girl|
|2010|"Arabesque"|53|—|Natalia Lesz|
|2010|"RadioACTIVE"|—|107|—|
|2010|"That Girl"|—|7|That Girl|
|2012|"Beat of My Heart"|—|98|That Girl|

Question: what is the number of singles that made the billboards?
Answer: 2